Answer:
I think its -2/5 but not sure
Step-by-step explanation:
name two segments parallel to VU.
ST,ZY,WX
NAME TWO SEGMENTS SKEW TO SW VU,ZY,UT,XY
NAME TWO SEGMENTS SKEW TO XY SW,VZ,VS,ST,VU
Differentiation is part of calculus
differentiation basically allows you to find the gradient of tangent